public class Policy| Policy | Default constructor. |
| Policy(Policy) | Copy constructor. |
| SetTimeout | Create a single timeout by setting socketTimeout and totalTimeout to the same value. |
| SetTimeouts | Set socketTimeout and totalTimeout. If totalTimeout defined and socketTimeout greater than totalTimeout, set socketTimeout to totalTimeout. |
| compress |
Use zlib compression on command buffers sent to the server and responses received
from the server when the buffer size is greater than 128 bytes.
This option will increase cpu and memory usage (for extra compressed buffers), but decrease the size of data sent over the network. Default: false |
| failOnFilteredOut |
Throw exception if filterExp is defined and that filter evaluates
to false (transaction ignored). The AerospikeException
will contain result code .
This field is not applicable to batch, scan or query commands. Default: false |
| filterExp |
Optional expression filter. If filterExp exists and evaluates to false, the
transaction is ignored.
Default: null |
| maxRetries |
Maximum number of retries before aborting the current transaction.
The initial attempt is not counted as a retry.
If maxRetries is exceeded, the transaction will abort with AerospikeExceptionTimeout. WARNING: Database writes that are not idempotent (such as Add()) should not be retried because the write operation may be performed multiple times if the client timed out previous transaction attempts. It's important to use a distinct WritePolicy for non-idempotent writes which sets maxRetries = 0; Default for write: 0 (no retries) Default for read: 2 (initial attempt + 2 retries = 3 attempts) Default for scan/query: 5 (6 attempts. See ScanPolicy comments.) |
| readModeAP |
Read policy for AP (availability) namespaces.
Default: ONE |
| readModeSC |
Read policy for SC (strong consistency) namespaces.
Default: SESSION |
| recordParser |
Alternate record parser.
Default: Use standard record parser. |
| replica |
Replica algorithm used to determine the target node for a partition derived from a key
or requested in a scan/query.
Default: SEQUENCE |
| sendKey |
Send user defined key in addition to hash digest on both reads and writes.
If the key is sent on a write, the key will be stored with the record on
the server.
Default: false (do not send the user defined key) |
| sleepBetweenRetries |
Milliseconds to sleep between retries. Enter zero to skip sleep.
This field is ignored when maxRetries is zero.
This field is also ignored in async mode.
The sleep only occurs on connection errors and server timeouts which suggest a node is down and the cluster is reforming. The sleep does not occur when the client's socketTimeout expires. Reads do not have to sleep when a node goes down because the cluster does not shut out reads during cluster reformation. The default for reads is zero. The default for writes is also zero because writes are not retried by default. Writes need to wait for the cluster to reform when a node goes down. Immediate write retries on node failure have been shown to consistently result in errors. If maxRetries is greater than zero on a write, then sleepBetweenRetries should be set high enough to allow the cluster to reform (>= 3000ms). Default: 0 (do not sleep between retries) |
| socketTimeout |
Socket idle timeout in milliseconds when processing a database command.
If socketTimeout is zero and totalTimeout is non-zero, then socketTimeout will be set to totalTimeout. If both socketTimeout and totalTimeout are non-zero and socketTimeout > totalTimeout, then socketTimeout will be set to totalTimeout. If both socketTimeout and totalTimeout are zero, then there will be no socket idle limit. If socketTimeout is not zero and the socket has been idle for at least socketTimeout, both maxRetries and totalTimeout are checked. If maxRetries and totalTimeout are not exceeded, the transaction is retried. For synchronous methods, socketTimeout is the socket SendTimeout and ReceiveTimeout. For asynchronous methods, the socketTimeout is implemented using the AsyncTimeoutQueue and socketTimeout is only used if totalTimeout is not defined. Default: 30000ms |
| totalTimeout |
Total transaction timeout in milliseconds.
The totalTimeout is tracked on the client and sent to the server along with the transaction in the wire protocol. The client will most likely timeout first, but the server also has the capability to timeout the transaction. If totalTimeout is not zero and totalTimeout is reached before the transaction completes, the transaction will abort with AerospikeExceptionTimeout. If totalTimeout is zero, there will be no total time limit. Default for scan/query: 0 (no time limit) Default for all other commands: 1000ms |